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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202205933
|2 doi
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|a pubmed24n1148.xml
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|a (DE-627)NLM344678202
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|a (NLM)35948462
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|a DE-627
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|c DE-627
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|a eng
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| 100 |
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|a Ling, Li-Li
|e verfasserin
|4 aut
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| 245 |
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|a Potassium-Assisted Fabrication of Intrinsic Defects in Porous Carbons for Electrocatalytic CO2 Reduction
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 20.10.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2022 Wiley-VCH GmbH.
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|a The fabrication of intrinsic carbon defects is usually tangled with doping effects, and the identification of their unique roles in catalysis remains a tough task. Herein, a K+ -assisted synthetic strategy is developed to afford porous carbon (K-defect-C) with abundant intrinsic defects and complete elimination of heteroatom via direct pyrolysis of K+ -confined metal-organic frameworks (MOFs). Positron-annihilation lifetime spectroscopy, X-ray absorption fine structure measurement, and scanning transmission electron microscopy jointly illustrate the existence of abundant 12-vacancy-type carbon defects (V12 ) in K-defect-C. Remarkably, the K-defect-C achieves ultrahigh CO Faradaic efficiency (99%) at -0.45 V in CO2 electroreduction, far surpassing MOF-derived carbon without K+ etching. Theoretical calculations reveal that the V12 defects in K-defect-C favor CO2 adsorption and significantly accelerate the formation of the rate-determining COOH* intermediate, thereby promoting CO2 reduction. This work develops a novel strategy to generate intrinsic carbon defects and provides new insights into their critical role in catalysis
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|a Journal Article
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|a CO2 conversion
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|a defects
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|a electrocatalysis
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|a metal-organic frameworks
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|a porous carbon
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|a Jiao, Long
|e verfasserin
|4 aut
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|a Liu, Xiaoshuo
|e verfasserin
|4 aut
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|a Dong, Yun
|e verfasserin
|4 aut
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| 700 |
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|a Yang, Weijie
|e verfasserin
|4 aut
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| 700 |
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|a Zhang, Hongjun
|e verfasserin
|4 aut
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|a Ye, Bangjiao
|e verfasserin
|4 aut
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|a Chen, Jun
|e verfasserin
|4 aut
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| 700 |
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|a Jiang, Hai-Long
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 34(2022), 42 vom: 23. Okt., Seite e2205933
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:34
|g year:2022
|g number:42
|g day:23
|g month:10
|g pages:e2205933
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|u http://dx.doi.org/10.1002/adma.202205933
|3 Volltext
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